Rotary printing press



Aug. 14, 1934.

H. D. BLACK 1,970,356 ROTARY PRINTING PRESS Filed June 14, 1930 5 Sheets-Sheet l I iI.:-L L J Aug, 14, 1934. H. D. BLACK 1,970,356

ROTARY PRINTING PRESS Filed June 14, 1930 5 Sheets-Sheet 2 Aug. 14, 1934. H. BLACK I 1,970,356

ROTARY PRINTING PRESS Filed June 14, 1930 5 Sheets-Sheet 3 ROTARY PRINTING PRESS Filed June 14, 1950 5 Sheets-Sheet 4 df b W vw' Aug. 14, 1934. H. D. BLACK ROTARY PRINTING PRESS Filed June 14, 1930 5 Sheets-Sheet 5.

Patented Aug. 14, 1934 ROTARY PRINTING PRESS Horace Drummond Black, Uxbridge, England, as-

signor to Bell Uxbridge, England Punch Company Limited,

Application June 14, 1930, Serial No. 461,166 .In Great Britain'July 17 1929 21 Claims.

This invention relates to high speed rotary printing presses which normally operate at a surface speed in excess of 200 feet per minute and particularly to high speed printing presses employed in the production of newspapers in which the surface speed maybe as great as 1,200 feet per minute and wherein several webs of paper are simultaneously and separately printed upon, brought together and thereafter slit and folded into a batch of sheets which constitute a newspaper. L

In high speed rotary printing presses of the above-mentioned character it is obvious that when all the type cylinders are of the same circumferential length and all positively coupled with one another by gearing the requisite register of different webs will be maintained. is desired to run a Dre-printed web of paper possessing different characteristics as to quality and printing into the product of a rotary printing press so as to be combined with and ultimately form part of its delivered production, which preprinted web will hereinafter be referred to as the inset, it has hitherto not been found possible to maintain register as between the inset web and the Webs printed in a high speed rotary printing press solely by automatic mechanically-operated mechanism. This difficulty is not overcome even if the circumferential length of the cylinder printing the inset were made to correspond exactly with the type cylinder of the printing press with the product of which it is intended to combine.

Under the most ideal conditions it is found that a ereep'of the inset web in one direction or the other takes place andrbeing accumulative, the

register, correct at the start, very soon becomes lost and the disability is accentuated by the variations of thetension of the respective webs at different-times of printing, the shrinkage that is liable to take place in the inset after printing and even by variation of the atmospheric conditions, prevailing at the time of the respective printings.

British Patent No. 316,956 provides means whereby an inset web is maintained in register with the production of a high speed rotary printing press by electrical and pneumatic means, in which the underlying principle consists in ensuring that a conveyor shall engage and travel with an inset web for at least a predetermined period at the surface speed thereof and that during at least this predetermined period, if the web be out of register, a correcting mechanism is brought into operation gradually and without shock and it is an object of the present invention to provide a mechanism comprising solely mechanical means If, however, 'it

which will ensure the registration of an inset web with the product of a high speed rotary printing press. The mechanism may be incorporated as a structural element of the press.

A further object ofthe presentinvention is to provide means of the above character which will ensure that the webs of paper are immediately brought into registration by means independent. of those which maintain the same in such register.

According to the present invention there is provided a high speed rotary printing press which comprises means operable to feed continuously an inset web having pre-printed matter disposed at regular intervals along the length thereof, a conveyor (arranged to engage and travel with the web for at least a. predetermined period at the surface speed thereof) associated with mechanically operable means arranged to detect any variation which would place the inset web out of register with the product of the press with which it is intended to register and ensure by mechanically-operated mechanism the actuation of means operable automatically to correct any such variation.

It is to be clearly understood that the present invention is applied solely to high speed rotary printing presses which operate at speeds in excess of those machines which, for example, produce photogravure work.

In one arrangement the inset, which is arranged to be associated with the webs printed upon the press, is provided along the length thereof with a series of regularly spaced holes which are preferably of circular formation and not more than one quarter of an inch in diameter. The inset web is arranged to extend around a portion of a rotatable conveying roller which acts as a conveyor for the inset web so that the inset shall be maintained in contact with the conveyor for at least a predetermined distance although it will be appreciated that the inset may be maintained in contact with the conveyor for a greater distance without affecting the operation of the 'ma chine. In this particular case it is essential that the conveyor travels at the same surface speed as the cylinders of the printing press and is positively driven therewith. The correcting mechanism is normally rendered inoperative when the inset web is in register with the webs being printed. Should however one of the registration indications in the inset web be moved out of normal position of correct register a passage is provided for means carried upon one side of the inset web so as to enable the same to extend through the web and actuate gradually means disposed upon the opposite side of the web for a period sumcient to ensure that correcting mechanism is set in. operation without material shock and it is essential according to the present invention that the inset web be maintained in contact with that portion of the conveyor through which the said means extends for such a period. The means disposed upon the opposite side of the inset web to that of the conveyor is arranged in such a manner as to ensure that it is maintained in effective co-operation with the means carried by the conveyor for a period of time which will permit the correcting mechanism controlled by the said elements to operate for at least such a period.

An example of a high speed rotary printing machine provided with mechanism constructed according to the present invention might comprise a conveyor consisting of a roller of 48 inches in circumference operating at a speed of 12,000 revolutions per hour in conjunction with mechanical means for actuating a correcting mechanism, in which case the interdependent means disposed on either side of the inset web comprises in the one case a pin arranged to extend through the surface of the conveyor and the inset web and a pair of inclined levers which are each arranged in the path of the said pins and so arranged as to be gradually actuated by the said pin as it is rotated by the conveyor. The said levers consistof elements of arcuate form conforming to the surface of the conveyor and of a length corresponding to an arc of for-example 30. The speed of the conveyor under such circumstances is approximately 800 feet per minute or 13.3 feet per second. An arcuate lever, extending over 30 of the surface of the conveying roller of 48 inches in circumference and rotating at a surface speed of 13.3 feet per second, will permit the pin to engage with the lever for a period of one-fortieth of a second at each revolution and with the dimensions and speeds enumerated above there exists a predetermined period of minimum duration during which a mechanical relay may be actuated without causing any material shock to be delivered to the mechanism, the relay being arranged thereafter to maintain the correcting mechanism in operation for a relatively long period. It will therefore be appreci-.

ated that where a pair of stationary levers are employed onthe opposite side of the web to that of the conveyor the arcuate lengthof such a lever is dependent upon the surface speed of the conveyor employed; for example, where a roller is 48 inches in circumference operating at 24,000 revolutions per hour the contact lever would be increased in order to obtain that predetermined period of time necessary for the effective operation of the mechanical relay.

In order that the invention may be fully understood reference is directed to the accompanying drawings, in which:-

Figure 1 is a side elevation of a correcting mechanism constructed in accordance with this invention.

Figure 2 is a sectional plan view on the line 2-2 of Figure 1 from which a portion of the inset web has been omitted,

Figure 3 is a plan of the mechanism disposed above the line 2--2 of Figure 1,

Figure '4 is a section on the line 4-4 of Figures 1 and 3,

Figure 5 is a sectional detail drawn to a larger scale on the line 5--'-5 of Figure 4,

Figure 6 is a section on the line 6--6 of Figure 5,

Figure 7 is a section on the line 7-7 of Figure 1 showing a conveyor and mechanism associated therewith and wherein a guide member 30a hereinafter described is omitted,

Figure 8 is a section on the line 8-8 of Figure 1 showing a detail thereof drawn to a larger scale,

- Figure 9 is a diagrammatic view of a portion of an inset web illustrating the relationship between the web and pins carried upon the conveyor,

Figure 10 is a vertical longitudinal section of a modified form of conveyor to that illustrated in Figure 1 together with mechanism associated therewith,

Figure 11 is a section on the line 11--11 of Figure 10,

Figure 12 is a section on the line 12-12 of Figure 10,

Figure 13 is a side elevation of a modified form of correcting mechanism to that shown in Figure 1,

Figure 14is a plan of Figure 13,

Figure 15 is a section drawn to a larger scale on the line 1515 of Figure 13 and with portions of a clutch mechanism hereinafter described shown in elevation.

Figure 16 is a section on the line 16-16 of Figure 15,

Figure 17 is a section on the line 17-17 of Fi ure 15,

Figure 18 is a section on the line 18-18 of Figure 15,

Figure 19 is a portion of a conveyor and modified mechanism associated therewith similar to that shown in Figure 15,,

Figure 20 is a transverse section of a conveyor as illustrated in Figure 19 and taken on a line corresponding to the line 20-20 of Figure 19,

Figure 21 is a sectional plan view of details on the line 2121 of Figure 19, and

Figure 22 is a diagrammatic view of a portion of an inset web illustrating the relationship between the web and a series of pins carried upon the conveyor illustrated in Figures 19 to 21.

Referring to Figures 1 to 9 of the drawings, a pre-printed web 1 of paper in the form of a roll 1a and hereinafter referred to as the inset web is mounted upon a spindle 2 which is rotatably carried in bearings provided in a frame 3. The inset web 1 is arranged to extend between a pair of feed rollers 4 and 5 which are arranged in frictional engagement therewith and are carried upon shafts 4a and 5a mounted in bearings formed in the frame 3. The rollers 4 and 5 are rotated through the medium of gear wheels 6, '7 and 8, the wheels 6 and '7 being mounted upon the shafts 4a and 5a of the rollers 4 and 5 so as to mesh with one another and the gear wheel 8 being arranged in mesh with the gear wheel 7 and mounted upon asleeve 9 rotatably carried in a bearing provided in the frame 3. The sleeve 9 is provided with an expansible pulley 20 which is arranged to be rotated by driving means operatively connected to the press in a manner hereinafter described. The

inset web 1 is arranged to extend partially around The inset web 1 extends from the register roll 10 downwardly and partially around a guide roller The I.

14 and thence upwardly and over a conveyor 15 carried by a shaft 1'7 which is .rotatably mounted in bearings provided in the 'main frame 3. The inset web 1 is arranged to extend around the conveyor 15 for substantially half the circumference thereof and is thereafter led into engagement with a guide roller 16, after which the inset web is arranged to be associated with printed webs issuing from the high speed rotary printing press with which the inset web 1 is to be maintained in register.

The conveyor 15 is of a circumferential length equal to the circumferential length of a corresponding printing cylinder of the high speed rotary printing press and is arranged to be rotated at the same speed. A pulley 18 is keyed to the shaft 17 and is connected by a belt 19 to the expansible pulley 20 provided upon the sleeve 9 so as to rotate the feed rollers 4 and 5. It will be observed that an expansion or contraction of the pulley 20 will effect an alteration of the speed at which the sleeve 9 is rotated and therefore a corresponding alteration of the speed at which the inset web 1 is drawn from the roll 1a by the rollers 4 and 5.

The conveyor 15 is provided with a pair of pins 21 and 22, one of which is shown in detail in Figure 8. Each of the pins, 21 and 22 is arranged to be subjectedto the influence of a spring 23 which normally causes the pin to project beyond the circumferential surface of the conveyor 15 into a position in which a stop 24 provided upon the pin is in contact with an abutment 25 "provided upon the inner surface of the conveyor. The inset web 1 is provided with a series of equally spaced perforations 26 (Figure 9) which are arranged in alignment with one another along the length of the web at a' pitch which corresponds substantially to the pitch of the printed matter upon the inset web. It will be observed that twice the distance between adjacent perforations 26 as indicated by the arrow D Figure 9, is equal to the length of the circumferential surface of the conveyor 15. The pins 21, 22am arranged so that their axes lie in a plane disposed .transversely to the axis of the conveyor but so that they are slightly out of diametrical alignment with respect to the conveyor 15 and in the normal operation of the apparatus the said pins are both arranged to be out of register with the perforations 26 in the inset web 1, in the manner indicated diagrammatically in Figure 9. As the conveyor-15 rotates in the direction of the-arrow A, Figure 1, the pins 21 and 22 alternately move into engagement .with the inset web 1 and are pressed by the inset web 1 and a plate 15a against which the inset web 1 bears inwardly against the action of the springs 23 and as long as the inset web is maintained in correct register, the inset web will thereafter maintain the pin in the depressed position.

If the inset web 1 creeps out of register with the product of the high speed rotary printing press the perforations in the web will move in one direction or the other with relationship to pins 21 and 22 of the conveyor 15. If the perforations 26 move relatively to the conveyor 15- mounted in guides 31 mounted on the main frame 3. The free ends of the levers 27 and 28 are slidably arranged in guides 30a (Figures 1 and 2). The co-operation between the pins 21 and 22 with the respective 'levers 27 and 28 is ensured by the engagement of rollers 32, mounted at each end of the bar 30 and which are arranged to engage with a pair of face cams 33 provided upon the ends of the conveyor 15. The cams 33 effect a reciprocating movement to the bar 30 so as to move the lever 27 into a position so as to be operable by the pin 21 and to move the lever 28 into a position so as to be operable by the pin 22.

When one of the pins 21 or 22 extends through an aperture 26 in the inset web 1 the corresponding lever 27 or 28 is moved thereby as the conveyor rotates against the influence of a spring 34 in the direction of the arrow E and this movement is communicated respectively by one of a pair of'Bowden wires 35, 36to one of a corresponding pair of pivotally mounted double armed levers 37 and 38, Figures 3 and 4. The inner cable of the Bowden wires are secured respectively at one end to lugs formed on the levers 27, 28 and extend through holes formed in the bar 30 against which,the adjacent ends of the outer casings of the Bowden wires are arranged to abut. The described movement of either of the wires 35 or 36 causes the corresponding double armed lever 37 or 38 to be moved respectively in the direction of the arrow B or C, Figure 3, against the influence of a spring 39. The levers 37 and 38 are arranged'to extend across guides 40 and 41 and to form abutments respectively for a pair of double armed clutch levers 42 and 43 which are pivotally mounted upon corresponding clutch members 44 and 45 arranged in frictional driving relationship with a governor shaft 46 (for a purpose hereinafter described) which is rotatably mounted in bearings carried by the main frame 3. The clutch levers 42 and 43 are normally maintained in the positions indicated in Figure 4 against the influence of springs 47 so that teeth 48 provided upon the said levers are maintained out of engagement with corresponding notches 49 provided in collars 50 which are each keyed to separate driving shafts 51, 52 rotatably mounted in bearings secured to the mainframe 3. The teeth 48 are'also maintained in the said position out of engagement with a corresponding series of notches 49a provided in each of two collars 50a mounted upon the ends of the governor shaft 46, Figures 5 and 6. The shafts 51, 52 are operatively connected by trains of gears 53, 54 respectively to a main shaft 55 which is arranged to be rotated by an electric motor 56. The gear train 54 includes an idler wheel 54a. and the arrangement is such that the shafts 51, 52 are rotated in opposite directions.

An actuation of either of the levers 37 or 38 in the manner described causes the same to be moved out of engagement with the end of the corresponding clutch lever 42 or 43 which is immediately moved by the spring 47 so that the ,tooth 48 thereon enters the notch 49 in the corresponding collar 50. and a notch 49a in the corresponding collar 50a whereupon the corresponding shaft 51 or 52 is locked in driving relationship to the governor shaft 46' so as to rotate the same in one direction or the other. Movement of the clutch lever 43 is prevented when the clutch lever 42 rotates with the governor shaft 46 and vice versa by' the provision upon the double armed levers 37, 38 of spring actuated latches 57 which are normally arranged to maintain one end of the said clutch levers inengagement with the double-armed levers 37 and 38. Rotation of, the governor shaft 46 relatively to either of the clutch levers 42 and 43 which is not actuated is permitted by the friction clutches 44 and 45. J

Upon the completion of one: rotation of the gov-. ernor shaft 46 and provided that the lever 37 or 38 which has been moved has returned to the normal position indicated in Figure 3 so that it is again arranged in the path of the corresponding lever 42' or 43, the-outer rounded end of the clutch lever which has been actuated abuts against the adjacent rounded nose of the corresponding latch 57 and deflects the same longitudinally against the influence of its spring, the necessary resistance of the lever 42 or 43 being supplied by the spring 47. The lever 42 or 43 thereafter abuts against the corresponding lever 37 or 38 and is rocked about its pivot by the continued rotation of the corresponding clutch member 44 or 45 untilthe tooth 48 on the said lever is disengaged from the notches 49 and 49a so that the governor shaft 46 ceases to rotate; The governor shaft 46 is operatively connected through the medium of bevel gears 58 to a shaft 59 mounted in vertically arranged bearings formed in the mainframe 3. The shaft 59 has mounted thereon a worm 60 which is arranged in mesh with a toothed segment 61 keyed to the shaft 13 so that a rotation of the shaft 59 in one direction or the other causes a corresponding rotative movement of the shaft 13. The movement of the shaft 13 causes a corresponding movement of the register roller 10 relatively to the feed roller 5 and the fixed guideroller 14 so that the feed of the inset web 1 is correspondingly and momentarily increased or decreased.

The shaft 59 has a second worm 62 mounted thereon which is arranged in mesh with a worm wheel 63 carried by a shaft 9a. The shaft 9a is provided with a screw threaded portion 64 which is arranged to screw into a correspondingly screw threaded hole in the main frame 3. The free end of the shaft 9a is arranged to extend through the sleeve 9 and is provided with a tapered portion 65 which is operable to control the expansible elements of the pulley 30 which as hereinbefore described rotates the feed rollers 4 and 5. It will be observed that the rotation of the shaft 59 in one direction or the other causes a corresponding rotational movement of the shaft 9a and an accompanying increase or decrease of the diameter of the pulley 20 so that the speed of rotation of the feed rollers 4 and 5 is correspondingly decreased and increased. V

The operation of the apparatus is as follows:-

Assuming the motor 56 to be rotating at'a uniform speed and the conveyor lfi rotating at the same speed as the corresponding printing cyli'n-f ders of a high speed rotary printing press, the feed rollers 4 and 5 rotate at a definite predetermined speed to'feed the web 1 to the product of the said press and, provided that the apertures 26 in the ,web 1 are out of alignment with the pins 21' and 22 in the manner hereinbefore described with reference to Figure 9, no actuation of the correcting mechanism is effected. When the web 1 creeps out of register, however, in one direction or the other with the printed matter-upon the webs forming the product of the press, one of the pins 21 or 22 upon the conveyor 15 projects through an aperture 26 in the web 1 and by virtue of the rotation of the conveyor 15 rocks one of tlie levers 27 or 28 associated therewith about its pivot. The movement of the levers 27, 28 is relatively small and is effected by a comparatively 21 and 22 will thereafter be maintained within ,ment of the levers 27 and 28 through the melong are of movement of the pins 21, 22 thus ensuring the gradual and easy action of the mechanism. The lever 27 or 28 when moved as described actuates one of the Bowden wires 35 or 36 and therebyv moves one of the double armed levers 37 or 38 out of engagement with the respective clutch lever 42 or 43. The said clutch lever is thereupon moved by the spring 47 to clutch the shaft 51 or 52 to the governor shaft 46 which is then rotated and effects a corresponding rotation of the shaft 59 and thereby a movement of the register roll 10 and rotation of the shaft 9a. The shaft 911 thereupon effects an alteration in the rate of feed of the inset web 1 in the manner hereinbefore described.

If one rotation of the governor shaft 46 is insuflicient to restore the register of the inset web 1 with the product of the printing press the pin 21 or 22 which projects through the aperture 26 in the web 1 will againproject upon the continued rotation of the conveyor and operate the corresponding lever 27 or 28 and so on until correct register is restored between the inset web 1 and the product of the press. The pins the conveyor 15 by contact with the inset web 1 so that no operation of the levers 27 and 28 is effected.

It will be observed that the operative movedium of asubstantially long are of movement of the pins 21 and 22 is analogous to the long are movement of "the conveyor described in the specification of British Patent No. 316,956 during which the inset web and the product of the press is out of register and the registration is being effected by electrical or pneumatic means and that the mechanical relay mechanism in the present application which is actuated by .the Bowden wire connections 35, 36 is analogous to the electrical and pneumatic relay mechanism described in the said specification whilst the actual mechanism which effects the correction of the insect web is substantially the same as that disclosed in the said specification No. 316,956.

The degree of correction which is effected upon each actuation of either of the levers 27 or 28 may be determined by the ratio which the bevel gears 58 bear to one another or by the ratio of the worm 60 to the toothed sector 61 and the 125 worm 62 to the worm wheel 63.

Referring to Figures 10, 11 and 12, a conveyor 15 is illustrated in which pins 21 and 22 are provided similar to those illustrated in connection with Figures 1 to 9. In the present arrangement, however, the pins 21 and 22 are arranged to extend into the interior of the conveyor 15 and are connected respectively by a pinand slot con- 'nection with arms 66 and 67 which are pivotally connected'respectively to "push rods 68 and 69. The rods 68 and 69 are mounted in the conveyor 15 so as to be slidable longitudinally therein and are normally maintained in a position corresponding to that of the rod 68 as shown in Figure 10 by springs 70. Each of the push rods 68, 69 is provided exteriorly of the conveyor with rollers 71, 72 respectively, thesaid rollers being arranged, in circumstances hereinafter described, to actuate respectively one of a pair of pivotally mounted actuating members 73, 74. The members 73 and 74 are operable when rocked about their pivots to effect a movement of Bowden wire connections 35, 36 which are in turn operable to actuate the correcting mechanism in a similar manner to the Bowden wire connections 150 described with reference to Figures 1 to 9. A pair of tappet rods '75, '76 are slidably mounted in the conveyor 15 and are arranged in alignment respectively with the push rods 68, 69. The outer ends of the tappet rods '75, 76 respectively are provided with rollers 77 and 78 which are arranged to be actuated against the influence of springs by a cam surface '79 which is mounted in fixed relationship with the machine frame.

The operation of this apparatus is as follows:-

Upon the rotation of the conveyor 15 the tappet rods 75, '76 are alternately moved longitudinally, during relatively long arcs of movement of the rollers '77, '78 over the cam '79 with respect to the conveyor. If the pins 21, 22 are maintained in a depressed positionby the web 1, for example, as indicated by the position of the pin 21 in Figure 8, the arms 66 and 67 are ma ntained out of alignment with the tappet rods '75 and '76, and no actuation of the rods 68 or 69 is effected. If, however, the inset web 1 moves out of correct register with the product of the printing press in the manner described with reference to Figures 1 to 9 one of the pins 21 or 22 will project through an aperture 26 in the inset web 1 and the corresponding arm 66 or 6'7 thereby moved into alignment with the corresponding tappet rod '75 or '76 so that an actuation of the said tappet rod by the cam '79 causes a movement of the corresponding push rod 68 or 69 which in turn effects a rocking movement of the corresponding actuating member '73, '74 and an actuation of the correcting mechanism through the medium of ti" Bowden wire 35 or 36 as hereinbefore described. In Figure 10, the pin 22 is shown in the position in which it extends through an aperture 26 in the web 1 and the arm 67,is in the position which causes the tappet 76 to actuate the push rod 69 and the member '74 as the conveyor 15 rotates.

It will be observed in this construction that the operative movements of the tappets '75, '76 are effected during a relatively long period corresponding to the relatively long arcs of movement of the rollers '77, '78 over the cam '79 and are analogous to the predetermined periods during which the operation of the electrically and pneumatically actuated correcting mechanism in the specification of British Patent No. 316,956 above referred to is effected and that therefore the operation of the present mechanism effects mechanically what is achieved by the apparatus disclosed in the said specification.

Although in the foregoing examples the mechanism which detects variations in the register of the inset web with the product of the press is arranged to actuate the correcting mechanism through the medium of Bowden wire controls, it is to be understood that such actuation may be effected by means of pneumatic or hydraulic or similar impulse producing means arranged to effect the necessary movement of the double armed levers 3'7 and 38.

Referring to the modified construction of apparatus illustrated in Figures 13 to 18 a web 1 is arranged to extend from a roll 1a thereof between feed rollers 4 and 5 and upwardly over a register roll 10, thence downwardly and partially around a guide roller 14 and thereafter around the major portion of the circumference of a conveyor 15 and over a guide roller 16 after which the web is arranged to be associated with printed webs issuing from a high speed rotary printing press in a similar manner to that described with reference to Figure 1. The feed roller 5 is arranged to be rotated through the medium of gears '7 and 8 and an expansible pulley 20 from the shaft 17 of the conveyor in a similar manner to that described with reference to Figure 1'.

Pins 21, 22, Figures'15 and 1'7, similar to the pins described with reference to Figures wand 12 are carried by the conveyor 15 and are normally pressed towards the exterior of the conveyor by springs 23 arranged in hollow extensions of the pins which extend within the conveyor 15. Members 81, 82 are pivotally mounted to the extensions of the pins 21, 22 and are arranged when the pins project beyond the surface of the conveyor in the manner, for example, indicated by the pin 21 in Figure 15, to fill the corresponding gap between a push rod 68 or-69 and a tappet rod '75 or '76 similarly to the arrangement described with reference to Figure 10. The tappet rods '75, 76are actuated upon the rotation of the conveyor 15 by a face cam '79 secured to the frame 3 of the machine. The push rods 68, 69 when operated by the tappet rods are arranged to move rocker arms 83, 84 which are pivotally mounted to the conveyor 15 and which when rocked are arranged respectively to move pins 85, 86 slidably mounted in the conveyor 15 against the influence of springs 8'7.

The pins 85, 86 are disposed diametrically of the conveyor 15 at different radial distances fromthe axis thereof and are arranged respectively to co-act with cam faces 88, 89 formed upon a crescent shaped member 90 (Figure 16) which is secured to one face of an arm 91 rigidly mounted upon a spindle 92 which is rotatably mounted in a bearing in the main frame 3 of the machine.

-The spindle 92 is arranged to extend through the main frame 3 and exteriorly of the frame a double armed lever 93 is rigidly connected to the spindle. The lever 93 is provided at its ends with tappets 94, 95 arranged to actuate in a manner hereinafter described, bell crank levers 96, 9'7 which are pivotally mounted upon the main frame 3 and are maintained in a normal position by springs 98. One limb of each of the bell crank levers 96, 97 is forked as indicated at 99 and the ends of the forks are pivotally connected respectively to housings 100 and 101 of thrust races secured respectively to one element 102, 103 of a pair of cone clutches. are keyed to a spindle 104 so as to be slidable axially thereon and the spindle is rotatably mounted in bearings 105 secured upon the main frame 3. The other elements 106, 107 of the pair of cone clutches are freely mounted upon the spindle 10 1 and are constructed in the form of bevel gears arranged in mesh with a bevel gear 108 rigidly mounted upon the shaft 1'7 of the conveyor, so that rotation of the conveyor causes the clutch elements 106 and 107 to be rotated in opposite directions.

A gear wheel 109 is rigidly mounted upon the upper end of the spindle 104 and is arranged in mesh with a gear wheel 110 secured to the lower end of one of a pair of screw threaded spindles 111 which are vertically mounted in bearings on the main frame 3. The spindles 111 are arranged to extend through similarly screw threaded bearings formed in slide blocks 112 in which bearings are provided arranged to carry the register roll 10. The spindles 111 are rotationally connected with one another through the medium of bevel gearing. 113 and a transversely disposed shaft 114 which is rotatably mounted in bearings n the main frame 3. Two vertically disposed The elements 102, 103

guide rods 115 are mounted upon the frame 3 and are arranged to extend through guides formed in the blocks 112.

The shaft 114 is operatively connected by chain and sprocket mechanism 116 to a spindle 9a which is operable to control the movements of the expansible elements of the pulley 29 in a similar manner to that described with reference to Figure 1.

A recess 11'? is formed in the extension of each of the pins 21, 22, Figures 15, 17 and 18, and the free end of one of a pair of arms 118 is arranged to extend into the said recess and the other end of the arm is rigidly secured to one end of a spindle 119 rotatably mounted in bearings provided in the conveyor 15. The spindle 119 is arranged to extend through the end face'15a of the conveyor and has secured thereto an arm 120, the free end of which is provided with a roller 121 arranged to bear against a cam 122 (Figure 18) rigidly mounted upon the main frame 3. The cam 122 is arranged to ensure in a manner hereinafter described, that the pins 21, 22 are retained or moved within the confines of the conveyor 15 during a predetermined portion of each rotation thereof.

The operation of the mechanism is as follows:

When the perforations 26 in the web 1 are in correct register with respect to the conveyor 15 as indicated diagrammatically in Figure 9 the pins 21, 22 are prevented from extending through the said perforations and the cam 122 is arranged to retain the said pins within theconfinesof the conveyor during that portion of each rotation thereof that the conveyor is out of contact with the web. Should, however, the web 1 creep out of register with the conveyor in one direction or the other so that a perforation 26 of the web coincides with one of the pins 21 or 22, the said pin is permitted to extend through the perforation and move the member 81 or 82 connected to the pin to establish operative connection between the corresponding tappet rod '75 or 76 and push rod 68 or 69 so that the continued rotation of the conveyor causes the cam 79 to move the corresponding rocker arm 83 or 84 and the pin 85 or 86 therewith against the infiuence of the spring 87 to cause the said pin to extend beyond the end face of the conveyor. As the conveyor rotates in the direction of the arrow in Figure 16 the projecting pin moves into engagement with the corresponding cam face 88 or 89 of the crescent shaped member 90 and rocks the spindle 92 and the double armed lever 93 in a corresponding direction. The tappet 94 or 95 1's thereby moved into engagement with and rocks the corresponding double armed lever 96 or 97 and causes the elements of the corresponding clutch 102, 106 or 103, 107 to be engaged with one another so that the spindle 104 is rotated in one direction or the other and effects a corresponding rotation of the screw-threaded spindles 111 through the medium of gears 109, 110. The rotation of the spindles 111 raises or lowers the register roll 10 to effect an immediate adjustment of the web 1 with relation to the conveyor 15 whilst the accompanying rotation of the shaft 114 effects through the medium of the chain and sprocket mechanism 116 an adjustment in the diameter of the pulley 20 and thereby a corresponding adjustment in the speed of rotation of the feed rollers 4 and 5. I

When either of the pins 21 or 22 extend through a perforation 26 in the web 1 in the manner described the said pin is moved within the confines of the conveyor 15 by the action of the cam 122 as hereinbefore described against the influence of the spring 23 as the surface of the conveyor adjacent the pin moves out of contact with the web and is only permitted to be influenced freely by the said spring as the surface of the conveyor adjacentthe said pin again moves into contact with the web.

It will be observed that in this construction the actuation of the correcting mechanism is effected during a relatively long period and is analogous to the predetermined period during which the operation of the electrically and pneumatically actuated correcting mechanism in the specification of Patent No. 316,956 above referred to is effected and that, therefore, the operation of the present mechanism eifects mechanically what is achieved by the apparatus in the said specification.

Referring now to Figures 19 to 22 a modification of the mechanism shown in Figures 13 to 18 is illustrated in which the pins 21,22 are each replaced by a series of tenpins 21a, 22a, so that detection of the movement of the web 1 out of register of the conveyor may be effected when the said movement is comparatively large or when it is repeated for a relatively large number of consecutive revolutions of the conveyor 15.

Each series of pins 21a, 22a is carried in a housing 123 mounted within a conveyor 15 and each of the pins is arranged in engagement with a corresponding leaf spring 124 which tends to press the pin towards the exterior of the conveyor. A slot 125 is formed in the extension of each of the pins 21a, 22a and a rib 126 is formed upon a member 127 and arranged to extend into the slots of each series of pins. The ribs 126 are of less width than the slots 125. The members 127 are each pivotally connected to one end of a lever 118 secured to a spindle 119 similar to the arrangement described with reference to Figures 13 to 18 so that each series of pins are collectively withdrawn within the confines of the conveyor 15 when the corresponding portion of the surface of the conveyor is out of contact with the web which extends around the conveyor. The arrangement is such that when each series of pins is freed by movement of the member 127 in the manner described with reference to Figures 13 to 18 each of the pins is free to be moved by its spring 124 to project beyond the surface of the conveyor when a perforation 26 coincides with the said pin, as indicated by the pin 21b in Figure 20.

The extension of each of the pins 21a, 22a is pivotally connected by a pin and slot connection to links 128 which are pivotally connected to a head 129, 130 mounted respectively upon one end of each push rod 68, 69 so that when a pin 210. or 22a extends beyond the surface of the conveyor the corresponding link 128 is moved about its pivot into alignment with a head 131 mounted upon one end of each tappet rod or '76 so that an actuation of either of the tappet rods in the manner described with reference to Figures 13 to 18 then effects an actuation of the corresponding push rod 68 or 69 which is operable to actuate the correcting mechanism in a similar manner to that described with reference to the aforesaid figures.

When the web 1 is in correct register with the conveyor 15 the pins 21a. and 22a bear a relative relationship to the perforations 26 in the web 1 in the manner indicated diagrammatically in Figure 22. It will thus be appreciated that the creep of the web in either direction out of register with the conveyor by an amount corresponding to a comparatively substantial arc of the surface thereof will be detected by the pins 21a, 22a and an actuation or consecutive actuations of the correcting mechanism efiected.

It is to be observed that the mechanism described forwithdrawing the pins within the confines of the conveyor when the same are out of contact with the web may be applied to any of the mechanical constructions hereinbefore described and further, the construction embodying the plurality of pins 210., 22a may also be applied to any of the said constructions. I

The sensitiveness of the detecting mechanism associated with the conveyor 15 in the constructions hereinbefore described may be controlled by the relationship between the size of the pins 21,"

22, 21a, 22a, and the size of the perforations 26 provided in the inset web 1. The said pe forations may be of a size equal to that of the'p s or for a substantial distance at the surface speedthereof and provided with registering means within which the successive registration indications are normally arranged to register, detector mechanism actuated solely mechanically responsive to relative displacement between the registration indications of the web and the registering means of the conveyor, a correcting mechanism for the web operable automatically to correct such displacement, and an operative connection between said detector mechanism and said correcting mechanism, said operative connection including a slow moving element, whereby an initiation of an actuation of said correction mechanism is effected gradually during a substantial portion of said substantial distance of movement of the conveyor.

2. A mechanism of the kind described which comprises means operable to feed continuously a preprinted inset web of material having a series of successive registration indications disposed at regular intervals along the length thereof, a conveyor arranged to engage and travel with the web for a substantial distance at the surface speed thereof and provided with registering means within which the successive registration indications are normally arranged to register, mechanical detector elements operable solely mechanically and responsive to displacements of said indications forwardly or backwardly relatively to said registering means, correcting mechanism for the web operable automatically to correct any such displacement, and an operative connection between said detector elements and said correcting mechanism, said operative connection including a slow moving element, whereby aninitiation of an actuation of said correcting mechanism is effected gradually during a. substantial portion of said substantial distance of movement of the conveyor.

3. In a mechanism of the kind described the combination of means operable to feed continuously an inset web having register perforations disposed at regular intervals along the length thereof, a rotary conveyor arranged to engage and travel with the inset at.the normal speed 1 thereof, said inset extending around a substantial portion of the circumference of said conveyor, a plurality of yieldingly controlled pins mounted on said conveyor and maintained within the.

register and effect a gradual actuation of a mechanical relay operable to initiate an actuation of correcting mechanism for the inset comprising mechanism operable to effect an immediate adjustment of the inset relatively to said pins and mechanism operable to maintain the said adjustment.

4. In a mechanism of the kind described the combination of means operable to feed continuously an inset web having register perforations disposed at regular intervals along the length thereof, a rotary conveyor arranged to engage and travel with the inset at the normal speed thereof, said inset extending around a substantial portion of the circumference of said conveyor, a plurality of yieldingly controlled pins mounted on said conveyor and maintained within the confines thereof by the inset when the same is in correct register, at least one of said pins being operable to extend through one of said holes in the inset when the same moves out of correct register and effect a gradual actuation of a mechanical relay operable to initiate an actuation of correcting mechanism for the inset comprising a register roll over which the inset is arranged to extend and movable automatically to vary an extended path of the inset and effect an immediate adjustment of the inset relatively to said pins and variable speed feed mechanism operable automatically to maintain the said adjustment.

5. In a mechanism of the kind described the combination of means operable to feed continuously an inset web having register perforations disposed-at regular intervals along the length thereof, a rotary conveyor arranged to engage and travel with the inset at the normal speed thereof, said inset extending around a substantial portion of the circumference of said conveyor, a plurality of yieldingly controlled pins mounted on said conveyor and maintained within the confines thereof by the inset when the same,

register and effect a gradual actuation of a mechanical relay operable to initiate an actuation of correcting mechanism for the inset comprising a register roll over which the inset is arw ranged to extend and movable automatically to vary an extended path of the inset and effect an immediate adjustment of the inset relatively to said pins and variable speed feed mechanism including an expanding pulley operable automatically to vary the speed of the feed of the inset to maintain the said adjustment.

6. In a mechanism of the kind described the combination of means operable to feed continuously an inset web having register perforations disposed at regular intervals along the length thereof, a rotary conveyor cylinder operable to be rotated in synchronism with a high speed rotary printing press and adapted to engage and travel with the inset at the normal speed thereof and said inset extending around a substantial portion of the circumference of said conveyor, at

least one pair of yieldingly controlled pins mounted on said conveyor and maintained within the confines thereof by the inset when the same is in correct register, the said pins respectively being operable to extend through one of said perforations in the inset when the same moves out of correct register in one direction or the other, a pair of arcuate levers located adjacent to and extending around said conveyor, and operable respectively to be moved gradually by one of said pins as the same is moved in the extended position with the conveyor and an operative connection respectively between said levers and a pair of mechanical relays operatively connected to correcting mechanism for the inset, whereby said correcting mechanism is actuated to advance or retard the inset.

7. In a mechanism of the kind described the combination of means'operable to feed continuously an inset web having register perforations disposed at regular intervals along the length thereof, a rotary conveyor cylinder operable to be rotated in synchronism with a high speed rotary printing press and adapted to engage and travel with the inset at the normal speed thereof and said inset extending around a substantial-portion of the circumference of said conveyor, at least one pair of yieldingly controlled pins mounted on said conveyor and maintained within the confines thereof by the inset when the same is in correct register, the said pins respectively being operable to extend through one of said perforations in the inset when the same moves out of correct register in one direction or the other, a pair of arcuate levers located adjacent to and extending around said conveyor, and operable respectively to be moved gradually by one of said pins as the same is moved in the extended position with the conveyor, an operative connection respectively between the said levers and a pair of mechanical relays, each operable to effect rotation of a governor shaft in opposite directions, an operative connection between said governor shaft and mechanism operable to effect an immediate longitudinal adjustment of the inset and mechanism operable to maintain the said adjustment.

8. In a mechanism of the kind described the combination of means operable to feed continuously an inset web having register perforations disposed at regular intervals along the length thereof, a rotary conveyor cylinder operable to be rotated in synchronism with a high speed rotary printing press and adapted to engage and travel with the inset at the normal speed thereof and said inset extending around a substantial portion of the circumference of said conveyor, at least one pair of yieldingly controlled pins mounted on said conveyor and maintained within the confines thereof by the inset when the same is in correct register, the said pins respectively being operable to extend through one of said perforations in the inset when the same moves out of correct register in one direction or the other, a pair of arcuate levers located adjacent to and extending around said conveyor, and operable respectively to be moved gradually by one of said pins as the same is moved in the extended position with the conveyor, an operative connection respectively between the said levers and a pair of mechanical relays, each operable to effect rotation of a governor shaft in opposite directions, an operative connectionbetween said governor shaft and a register roll over which the inset is arranged to extend and which is movable to vary an extended path of the inset and effect an immediate longitudinal adjustment of the inset, and an operative connection between said governor shaft and variable speed feed mechanism operable to maintain the said adjustment.

9. Irr'a mechanism of the kind described the combination of means operable to feed continuously an inset web having register perforations disposed at regular intervals along the length thereof, a rotary conveyor cylinder operable to be rotated in synchronism with a high speed rotary printing press and adapted to engage and travel with the inset at the normal speed thereof and said inset extending around a substantial portion of the circumference of said conveyor, at least one pair of yieldingly controlled pins mounted on said conveyor and maintained within the confines thereof by the inset when the same is in correctregister, the said pins respectively being operable to extend through one of said perforae tions in the inset when the same moves out of correct register in one direction or the other, an operative connection respectively between the said pins and members operable when the respective pin is in the extended position to establish a driving connection between one of a pair of relatively gradually operated tappet rods, and one of a pair of push rods, an operative connection respectively between said push rods and a. pair of mechanical relays operatively connected to correcting mechanism for the inset, whereby the said correcting mechanism is actuated to advance or retard the inset.

10. In a mechanism of the kind described the combination of means operable to feed continuously an inset web having register perforations disposed at regular intervals along the length thereof, a rotary conveyor cylinder operable to be rotated in synchronism with a high speed rotary printing press and adapted to engage and travel with the inset at the normal speed thereof and said inset extending around a substantial portion of the circumference of said conveyor, at least one pair of yieldingly controlled pins mounted on'said conveyor and maintained within the confines thereof by the insetwhen the same is in correct register, the said pins respectively being operable to extend through ,one of said perforations in the inset when the same moves out of correct register in one direction or the other, an operative connection respectively between the said pins and members operablewhen the respective pin is in the extended position to establish a driving connection between one of a pair of relatively gradually operated tappet rods and one of a pair of push rods, an operative connection respectively between said push rods and a pair of mechanical relays operable to effect rotation of a governor shaft in opposite directions, an operative connection between said governor shaft and mechanism operable to effect an immediate longitudinal adjustment of the inset and mechanism operable to maintain the said adjustment.

11. In a mechanism of the kind described the combination of means operable to feed continuously an inset web having register perforations disposed at regular intervals along the length thereof, a rotary conveyor cylinder operable to be rotated in synchronism with a high speed rotary printing press and adapted to engage and travel with the inset at the normal speed thereof and said inset extending around a substantial portion of the circumference of said conveyor, at least one pair of yieldingly controlled pins mounted on said conveyor and maintained within the confines thereof by the inset when the same is in correct register, the said pins respectively being operable to extend through one of saidtive connection respectively between said push rods and a pair of mechanical relays operable to effect rotation of a governor shaft in opposite directions, an operative connection between said governor shaft and a register roll over which the inset is arranged to extend and which is movable to vary an extended path of t inset and effect an immediate longitudinal adjustment of the inset, and an operative connection between said governor shaft and variable speed feed mechanism operable to maintain the said adjustment.

12; In a mechanism of the kind described the combination of means operable to feed continu ously an inset web having register perforations disposed at regular intervals along the length thereof, a rotary conveyor cylinder operable to be rotated in synchronism with a high speed ro-,

tary printing press and adapted to engage and travel with the inset at the normal speed thereof with said inset extending around a substantial portion of the circumference of said conveyor, at least one pair of yieldingly controlled pins mounted on said conveyor and maintained within the confines thereof by the inset when the same is in correct register, the said pins respectively being operable to extend through one of said perforations in the inset when the same moves out of correct register in one direction or the other, an operative connection respectively between said pins and a pair of members operable respectively when said pins move into the extended position to establish driving relationship between one of a pair of gradually operated tappet rods and one of a pair of push rods carried by said conveyor, a pair of secondary pins each operable to be moved by one of said push rods so as to project beyond a predetermined normal position relatively to the conveyor and deflect a segmental cam shaped member in one direction or the other and an operative connection between said cam shapedmember and correcting mechanism operable to advance or retard the inset.

13. In a mechanism of the, kind described the combination of means operable to'feed continuously an inset web having register perforations disposed at regular intervals along the length thereof, a rotary conveyor cylinder operable to be rotated in synchronism with a high speed rotary printing press and adapted'to engage and travel with the inset at the normal speed thereof with said inset extending around a substantial portionj of the circumference of said conveyor, at least one pair of yieldingly controlled pins mounted on said conveyor and maintained within the confines thereof by the inset when the same respectively when said pins move into the extended position to establish driving relationship between one of a pair of gradually operated tappet rods and one of a pair of push rods carried by said conveyor, a pair of secondary pins each operable to be moved by one of said push rods so as to project beyond a predetermined normal position relatively to the conveyor and deflect a segmental cam shaped member in one direction or the other and an operative connection between said cam shaped member and a pair of clutches operable when actuated to establish driving connections in opposite directions between the conveyor and correcting mechanism operable to advance or retard the inset.

14. In a mechanism of the kind described the combination of means operable to feed continuously an inset web having register perforations disposed at regular intervalsalong the length thereof, a rotary conveyor cylinder operable to be rotated in synchronism with a high speed rotary printing press and adapted to engage and travel with the inset at the normal speed thereof with said inset extending around a substantial portion of the circumference of said conveyor, at least one pair of yieldingly controlled pins mounted on said conveyor and maintained within the confines thereof by the inset when the same is in correct register, the said pins respectively being operable to extend through. one of said perforations in the inset when the same moves out of correct register in one direction or the other, an operative connection respectively between said pins and a pair of members operable respectively when said pins move into the extended position to establish driving relationship between one of a pair of gradually operated tappet rods and one of a pair of push rods carried by said conveyor, a pair of secondary pins each operable to be moved by one of said push rods so as to project beyond a predetermined normal position relatively to the conveyor and deflect a segmental cam shaped member in one direction or the other-and an operative connection between said cam shaped member and mechanism with said inset extending around a substantial portion of the circumference of said conveyor, at least one pair of yieldingly controlled pins mounted on said conveyor and maintained within the tary printing press and adaptedto engage and i travel with the inset at the normal speed thereof confines thereof by the inset when the same is in correct register, the said pins respectively being operable to extend through one of said perforations in the inset when the same moves out of correct register in one direction or the other, an operative connection respectively between said pins and a pair of members operable respectively when said pins move into the extended position to establish driving relationship between one of a pair of gradually operated tappet rods and one of a pair of push rods carried by said conveyor, a pair of secondary pins each operable to be moved by one of said push rods so as to project beyond a predetermined normal position rehtively to the conveyor and deflect a segmental cam shaped member in one direction or the other and an operative connection between said cam shaped member and a pair of clutches operable when actuated to establish driving connections in opposite directions between the conveyor and a register roller over which the inset is arranged to extend and which is operable to vary the length of an extended path of the inset to effect an immediate adjustment thereof and variable speed feed mechanism for the inset operable to maintain the said adjustment.

16. In a mechanism of the kind described the combination of means operable to feed continuously an inset web having register perforations disposed at regular intervals along the length thereof, a rotary conveyor cylinder operable to be rotated in synchronism with a high speed rotary printing press and adapted to engage'and travel with the inset atthe normal speed thereof with said inset extending around a substantial portion of the circumference of said conveyor, at least one pair of yieldingly controlled pins mounted on said conveyor and maintained within the confines thereof by the inset when the same is in correct register, the said pins respectively being operable to extend through one of said perforations in the inset when-the same moves out of correct register in one direction or the other, a pair of secondary pinscarried by said conveyor and operative connections between the pins of both pairs to cause the secondary pins to project relatively to the conveyor when the corresponding pins of the first said pair move into the extended position, a movable cam member operable to be gradually moved respectively in one direction or the other by said secondary pins when in the projected position as the conveyor rotates, and an operative connection between said cam member and correcting mechanism operable to advance or retard the inset.

1'7. In a mechanism of the kind described the combination of means operable to feed continuously an inset web having register perforations forations in the inset when the same moves out" of correct register in one direction'or the other, a pair of secondary pins carried by said conveyor and operative connections between the pins of both pairs to cause the secondary pins to project relatively to the conveyor when the corresponding pins of the first said pair move into the extended position, a movable cam member operable to be gradually moved respectively in one direction or the other by said secondary pins when in the projected position as the conveyor rotates, and an operative connection between said cam member andimechanism operable to effect an immediate longitudinaladjustment of the inset and mechanism operable to maintain the adjustment.

18. In a mechanism of the kind described the combination of means operable to feed continuously an inset web having register perforations disposed at regular intervals along the length thereof, a rotary conveyor cylinder operable to be rotated in synchronism with a high speed rotary printing press and adapted to engage and travel with an inset at the normal speed thereof with said inset extending around a substantial portion of the circumference of said conveyor, at least one pair of yieldingly controlled pins mounted on said conveyor and maintained within the confines thereof by the inset when the same is in correct register, the said pins respectively being operable to extend through one of said perforations in' the inset when the same moves out of correct register in one direction or the other, a pair of secondary pins carried by said conveyor and operative connections between the pins of both pairs to cause the secondary pins to project relatively to the conveyor when the corresponding pins of the first said pair move into the extended position, a movable cam member operable to be gradually moved respectively in one direction or the other by said secondary pins when in the projected position as the conveyor rotates, and an operative connection between said cam member and a pair of clutches operable when actuated to establish driving connections in opposite direction between the conveyor and a register roller over which the inset is arranged to extend and which is operable to vary the length of an extended path of the inset to effect an immediate adjustment thereof and variable speed feed mechanism for the inset operable to maintain the said adjustment.

19. A mechanism .of the kind described which comprises means operable to feed continuously an inset web having preprinted matter disposed at regular intervals along the length thereof, a conveyor (arranged to engage and travel with the web for at least a predetermined period at the surface speed thereof) associated with mechanically actuated detector elements operable to detect any variations which-would place the inset web out of register with the product of a highspeed rotary printing press with which it is intended to register and ensure by mechanically operated mechanism the relatively gradual actuation of means operable automatically to effect an immediate adjustment of the inset and an actuation of means operable to maintain the said adjustment, for the purpose described.

20. 'A mechanism of the kind described which comprises means operable to feed continuously an inset web having preprinted matter disposed at regular intervals along the length thereof, a conveyor (arranged to engage and travel with the web for at least a predetermined period at the surface speed thereof) associated with mechanically actuated detector elements operable to detect any variation which would place the inset web out of register with the product of a high speed rotary printing press with which it is intended to register and ensure by mechanically operated mechanism the relatively gradual actuation of means operable automatically to move a register roller over which the inset is arranged to extend and thereby vary the length of an extended path of the inset to effect an immediate adjustment thereof and an actuation of variable speed feed mechanism operable automatically to maintain the said adjustment.

21. A mechanism of, the kind described which comprises in combination means arranged to feed continuously a preprinted inset of web of material having a series of regularly spaced holes disposed along the length thereof, correcting mechanism operable to adjust the feed of the and a controlling connection between one 01 said devices and said correcting mechanism adapted to actuate the same upon establishment of an operative connection through one of said holes between the said devices for at least a substantial portion of said substantial distance, for the purpose described.

HORACE DRUMMOND BLACK. 

